Direct link devised in hotel (7)
I believe the answer is:
hotline
'direct link' is the definition.
'hotline' can be an answer for 'link' (I have seen 'critical link' mean 'hotline' so perhaps 'link' could also mean 'hotline'). I am unsure of the 'direct' bit.
'devised in hotel' is the wordplay.
'devised' indicates anagramming the letters.
'in'+'hotel'='inhotel'
'inhotel' is an anagram of 'HOTLINE'.
Can you help me to learn more?
(Other definitions for hotline that I've seen before include "Communications link" , "Direct telephone link between two officials" , "linked Washington to the Kremlin" , "Direct phone link" , "Important number to call" .)